Southport
North Carolina, United States Of America
34.00 ° N
78.00 ° W
20 ft
Subtropical moist forest
Cfa Humid subtropical climate
+
Cfak Subtropical climate with evenly distributed precipitation with hot summer with cool winter
Traditional Koppen classification: Cfa (Humid subtropical climate)

Official definition:
  • C – temperature of warmest month greater than or equal to 10 °C and temperature of coldest month less than 18 °C, but higher than -3 °C
  • f – precipitation is relatively evenly distributed throughout the year and do not fulfill classification criteria for s or w type
  • a - temperature of warmest month above 22 °C

The Cfa climate type is typical for areas on the Eastern coasts of continents, mostly between 20th and 30th latitude. The average temperature of the warmest month is higher than 22 °C and the temperature throughout the year range from usually -3 to 18 °C. In the winter, however, in some cases it can be well below freezing point.

Precipitation is relatively evenly distributed during the entire year. Humidity tends to be higher during the summer half year, when the conditions resemble the humid tropical climate. The total annual rainfall can be quite variable, most commonly between 650 and 2500 mm. Thunderstorms during the summer are frequent.

Cfa climate type can be found for example in the Southeastern USA, Northern part of Argentina, Uruguay and Southern part of Brazil, Southern Japan and South of China.


Modern Trewartha classification: Cfak (Subtropical climate with evenly distributed precipitation with hot summer with cool winter)

Subtropical in the Koppen and Trewartha classification is defined as a region, where at least eight months has an average temperature of more than 10 °C, but the coldest month has an average temperature of less than 18 °C. The individual subtypes then differ in their annual precipitation distribution. In Trewartha classification there is a condition of maximum annual precipitation of 900 mm.

In general the subtropical climate is usually found in areas polewards from the tropical zones. It can also be found inside tropical zones at places with higher altitude. Typical are for example citrus trees or palm trees.

The Cf subtype is characterized by precipitation evenly distributed throughout the year.

It can be found for example in Eastern part of South America, in large areas in Southeast U.S., Northern Italy, the Southwest tip of Russia, in Southeast Asia, some parts of Japan or East coast of Australia.

  • hot summer: warmest month with average temperature between 23 and 28 °C
  • cool winter: coldest month with average temperature between 0 and 10 °C

Summary

62 °F
52 / 73
57.0 in


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 32.034.042.050.059.067.071.070.064.052.043.035.0 52.0
Avg Temperature(°F) 43.046.053.061.069.076.080.079.074.064.056.047.0 62.0
Max Temperature (°F) 55.057.064.072.079.085.088.087.083.075.068.059.0 73.0
Range 23.023.022.022.020.018.017.017.019.023.025.024.0 21.0


Max month Min month Annual range
Min Temperature Jul Jan 39.0°F
Avg Temperature Jul Jan 37.0°F
Max Temperature Jul Jan 33.0°F
Temperature range Nov Jul, Aug 56.0°F
Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 59.0 42.0 50.33 17.0 71.0 67.0 69.33 4.0 64.0 43.0 53.00 21.0 35.0 32.0 33.67 3.0
Avg Temperature 69.0 53.0 61.00 16.0 80.0 76.0 78.33 4.0 74.0 56.0 64.67 18.0 47.0 43.0 45.33 4.0
Max Temperature 79.0 64.0 71.67 15.0 88.0 85.0 86.67 3.0 83.0 68.0 75.33 15.0 59.0 55.0 57.00 4.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 43.046.053.061.069.076.080.079.074.064.056.047.0 62.0


Max month Min month Annual range
Avg Temperature Jul Jan 37.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 69.0 53.0 61.00 16.0 80.0 76.0 78.33 4.0 74.0 56.0 64.67 18.0 47.0 43.0 45.33 4.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) -9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0 62.0


Max month Min month Annual range
Avg Humidity 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0


Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 4.74.44.53.04.04.96.97.16.93.33.34.1 4.8 57.0
Wetdays -9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999 -9999 -119988
Wetdays ratio (%) -32254.8
-9999,10030		-35710.7
-9999,10027		-32254.8
-9999,10030		-33330.0
-9999,10029		-32254.8
-9999,10030		-33330.0
-9999,10029		-32254.8
-9999,10030		-32254.8
-9999,10030		-33330.0
-9999,10029		-32254.8
-9999,10030		-33330.0
-9999,10029		-32254.8
-9999,10030		 -32873.4
-32873.4,32973.4


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Aug Apr Summer Spring 4.1in
Wetdays 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec Autumn Spring, Summer, Winter 0
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Wetdays / month


Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.5 3.0 1.4 11.5 7.1 4.9 2.2 18.9 6.9 3.3 3.5 13.5 4.7 4.1 0.7 13.2
Wetdays -9999 -9999 0 -29997 -9999 -9999 0 -29997 64 -9999 10063 -9879 -9999 -9999 0 -29997

Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 4.74.44.53.04.04.96.97.16.93.33.34.1 4.8 57.0


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Aug Apr Summer Spring 4.1in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.5 3.0 1.4 11.5 7.1 4.9 2.2 18.9 6.9 3.3 3.5 13.5 4.7 4.1 0.7 13.2


Sunlight / Day length
+

Max day length Min day length Sunlight/Day length
Jan -9999 min
-167 h 21 min 		610 min
10 h 10 min
610,830 		630 min
10 h 30 min
(31.1.)
630,810 		595 min
9 h 55 min
(1.1.)
595,845 		-1639.0 %
-9999,10609
Feb -9999 min
-167 h 21 min 		658 min
10 h 58 min
658,782 		686 min
11 h 26 min
(29.2.)
686,754 		632 min
10 h 32 min
(1.2.)
632,808 		-1519.1 %
-9999,10657
Mar -9999 min
-167 h 21 min 		720 min
12 h 0 min
720,720 		752 min
12 h 32 min
(31.3.)
752,688 		688 min
11 h 28 min
(1.3.)
688,752 		-1388.7 %
-9999,10719
Apr -9999 min
-167 h 21 min 		783 min
13 h 3 min
783,657 		811 min
13 h 31 min
(30.4.)
811,629 		754 min
12 h 34 min
(1.4.)
754,686 		-1276.4 %
-9999,10782
May -9999 min
-167 h 21 min 		836 min
13 h 56 min
836,604 		855 min
14 h 15 min
(31.5.)
855,585 		813 min
13 h 33 min
(1.5.)
813,627 		-1195.7 %
-9999,10835
Jun -9999 min
-167 h 21 min 		862 min
14 h 22 min
862,578 		864 min
14 h 24 min
(20.6.)
864,576 		856 min
14 h 16 min
(1.6.)
856,584 		-1159.7 %
-9999,10861
Jul -9999 min
-167 h 21 min 		848 min
14 h 8 min
848,592 		862 min
14 h 22 min
(1.7.)
862,578 		829 min
13 h 49 min
(31.7.)
829,611 		-1179.0 %
-9999,10847
Aug -9999 min
-167 h 21 min 		801 min
13 h 21 min
801,639 		828 min
13 h 48 min
(1.8.)
828,612 		773 min
12 h 53 min
(31.8.)
773,667 		-1247.9 %
-9999,10800
Sep -9999 min
-167 h 21 min 		741 min
12 h 21 min
741,699 		771 min
12 h 51 min
(1.9.)
771,669 		710 min
11 h 50 min
(30.9.)
710,730 		-1350.0 %
-9999,10740
Oct -9999 min
-167 h 21 min 		678 min
11 h 18 min
678,762 		708 min
11 h 48 min
(1.10.)
708,732 		648 min
10 h 48 min
(31.10.)
648,792 		-1475.8 %
-9999,10677
Nov -9999 min
-167 h 21 min 		623 min
10 h 23 min
623,817 		646 min
10 h 46 min
(1.11.)
646,794 		603 min
10 h 3 min
(30.11.)
603,837 		-1605.8 %
-9999,10622
Dec -9999 min
-167 h 21 min 		595 min
9 h 55 min
595,845 		602 min
10 h 2 min
(1.12.)
602,838 		592 min
9 h 52 min
(21.12.)
592,848 		-1680.4 %
-9999,10594
Year -10832 min
-181 h 28 min 		730 min
12 h 10 min
730,710 		864 min
14 h 24 min
(20. 6.)
864,576 		592 min
9 h 52 min
(21. 12.)
592,848 		-1484.3 %
-10832,11562



Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day
(min/day) -9999 -9999 -9999 -1282.1%
-9999,10779 		-9999 -9999 -9999 -1194.7%
-9999,10836 		-9999 -9999 -9,999 -1469.9%
-9999,10679 		-9999 -9999 -9999 -1612.0%
-9999,10619
Day length 855 688 780 864 773 837 771 603 680 686 592 620

Day length
+

Max day length Min day length
Jan 610 min
10 h 10 min
610,830 		630 min
10 h 30 min
(Array.1.)
630,810 		595 min
9 h 55 min
(1.1.)
595,845
Feb 658 min
10 h 58 min
658,782 		686 min
11 h 26 min
(Array.2.)
686,754 		632 min
10 h 32 min
(1.2.)
632,808
Mar 720 min
12 h 0 min
720,720 		752 min
12 h 32 min
(Array.3.)
752,688 		688 min
11 h 28 min
(1.3.)
688,752
Apr 783 min
13 h 3 min
783,657 		811 min
13 h 31 min
(Array.4.)
811,629 		754 min
12 h 34 min
(1.4.)
754,686
May 836 min
13 h 56 min
836,604 		855 min
14 h 15 min
(Array.5.)
855,585 		813 min
13 h 33 min
(1.5.)
813,627
Jun 862 min
14 h 22 min
862,578 		864 min
14 h 24 min
(Array.6.)
864,576 		856 min
14 h 16 min
(1.6.)
856,584
Jul 848 min
14 h 8 min
848,592 		862 min
14 h 22 min
(Array.7.)
862,578 		829 min
13 h 49 min
(31.7.)
829,611
Aug 801 min
13 h 21 min
801,639 		828 min
13 h 48 min
(Array.8.)
828,612 		773 min
12 h 53 min
(31.8.)
773,667
Sep 741 min
12 h 21 min
741,699 		771 min
12 h 51 min
(Array.9.)
771,669 		710 min
11 h 50 min
(30.9.)
710,730
Oct 678 min
11 h 18 min
678,762 		708 min
11 h 48 min
(Array.10.)
708,732 		648 min
10 h 48 min
(31.10.)
648,792
Nov 623 min
10 h 23 min
623,817 		646 min
10 h 46 min
(Array.11.)
646,794 		603 min
10 h 3 min
(30.11.)
603,837
Dec 595 min
9 h 55 min
595,845 		602 min
10 h 2 min
(Array.12.)
602,838 		592 min
9 h 52 min
(21.12.)
592,848
Year 730 min
12 h 10 min
730,710 		864 min
14 h 24 min
(21. 6.)
864,576 		592 min
9 h 52 min
(22. 12.)
592,848



Mar, Apr, May
Jun, Jul, Aug
Sep, Oct, Nov
Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Day length 855 688 780 864 773 837 771 603 680 686 592 620

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